Table 4 Image brightness equalization performance of each algorithm.

Dynamic light scenarios	Evaluation indicators	BPDHE	NPE	This study	Original image	Literature¹¹	Literature¹²	Literature³⁷	Literature³⁸
Local irradiation by moving light sources	Mean gradient	19.83	22.56	26.98	13.25	24.17	25.32	24.85	25.19
	VIF	0.75	0.81	0.91	0.53	0.84	0.86	0.85	0.87
	EME	9.82	10.75	13.56	6.21	11.63	12.28	11.97	12.43
	BRISQUE	42.85	39.62	31.89	59.34	36.51	34.27	35.82	34.95
	ΔL	28.63	22.45	9.87	85.21	18.72	15.36	17.52	16.18
	ETS	0.68	0.73	0.89	0.35	0.78	0.82	0.80	0.83
	Processing time/ms	72.35	68.42	85.06	/	95.17	89.63	102.58	98.76
Sudden light-dark change caused by instant occlusion	Mean gradient	18.65	21.34	26.23	12.78	23.85	24.91	24.36	24.78
	VIF	0.73	0.79	0.90	0.51	0.83	0.85	0.84	0.86
	EME	9.21	10.38	12.89	5.87	11.25	11.97	11.52	12.15
	BRISQUE	44.17	40.83	32.65	60.12	37.29	35.12	36.95	35.78
	ΔL	32.15	25.78	11.24	92.56	20.43	17.69	19.23	18.05
	ETS	0.65	0.70	0.87	0.32	0.76	0.80	0.78	0.81
	Processing Time/ms	75.62	71.38	87.32	/	98.45	92.17	105.32	101.45
Direct irradiation by sudden strong light	Mean Gradient	17.92	20.18	25.76	11.93	22.63	23.85	23.17	23.59
	VIF	0.71	0.77	0.88	0.48	0.81	0.83	0.82	0.84
	EME	8.95	9.87	12.47	5.43	10.72	11.35	11.03	11.68
	BRISQUE	45.32	42.19	33.91	62.47	38.67	36.58	37.92	37.15
	ΔL	35.87	28.92	13.56	105.38	23.15	19.84	21.67	20.32
	ETS	0.62	0.67	0.85	0.29	0.73	0.78	0.75	0.79
	Processing Time/ms	78.15	74.63	89.65	/	102.38	95.72	108.65	104.23

Quick links

Search